Friction-lock for lever fan-blowers



J. W. HIEMENZ.

FRICTION LOCK FOR LEVER FAN BLOWERS, &c. No. 277,487.

Patented May 15, 1883.

M w m J jiifzwscwa UNITED STATES PATENT OFFICEQ JOHN \V. HIEMENZ, OFLANCASTER, PENNSYLVANIA.

FRICTION-LOCK FOR LEVER FAN-BLOWERS, 00.

SPECIFICATION forming part of Letters Patent No. 277,487, dated May 15,1883. Application tiled February l9, 18: 3. (X0 model.)

To all whom it may concern Be it known that I, JOHN W. HIEMENZ, acitizen of the United States of America, resid' ing at Lancaster, in thecounty of Lancaster and State of Pennsylvania, have invented certain newand useful Improvements in Friction-Locks for Lever Fan-Blowers andother Machinery, of which the following is a specification, referencebeing had therein to the accompanying drawings.

My invention relates to mechanism for converting vertical to rotarymotion. It may be used in connection with any machinery requiring suchconversion of movement; but in this application I illustrate its use inconnection with a blacksmiths fan or blower.

The description following, togetherwith the accompanying drawings, willfully set forth the nature and form of the invention.

In the drawings,l igure 1 is a side elevation of my device in connectionwith a smilhs blower. A part of the frame is broken away to exhibit moreclearly the entire side of the device. Fig. 2 is a perspective view ofthe friction clutch or look, and Fig. 3 is a plan view of theclutch-bearing disk with two friction-locks attached.

Similar letters of reference indicate corresponding parts in the severalviews.

The letter A indicates a frame composed of suitable base and uprightsupporting-posts, and furnished with bearings for the journals of thehorizontal shaft 0, the bolt 71, and the fan F.

G is a balance-wheel provided with a band tire, and having an annularside extension or box-wheel, E,firmly fixed to it. The Wheel G is fixedupon the shaft 0.

D is a disk, loosely turning on the shaft (J. This disk has an annularextension on its outer side, on which the straps to and a alternatelywind. The recesses in which these straps are wound are separated by asuitable partition, and each strap has one end fixed in its recess andthe other end to the lever b. Fig. 3 represents the inside of the diskD.

f is a circular projection, attached with screws or cast in one piecewith the disk. It is of equal thickness with the looks at d, and hasrecesses to receive the inner ends of the looks at d. Check-pins c e arealso provided,

.yond the circumference of the disk.

or the central part, I, may be formed, as indicated by the dotted lines,to answer the same purpose as the pins. The locks or clutches d d aresecured by bolt or screw, on which they are free to turn until checkedin one direction by the pins 6 c, and in the other direction by thepiece f1 Each lock dis provided on its pcripheral surface with afriction-bearing face, d, made preferably of leather or rawhide; but anysuitable material may be used. The front edges of the looks (1 (1,01'those edges which impinge upon the checks 6 c, are slightly longer thanthe rear edges, so that when the lock (1 falls away from the pin 6 itsforward edge and the friction -surfaee d extend be- The disk D isslightly smaller circuuiterentially than the inside of the box-wheel E,and the locks d d areso adjusted that when the disk revolves in onedirection the surfaces d d bear against the inner surface of the wheelE; but when it revolves in the opposite direction t hey fall away fromthe wheel E.

My invention is operated in the following manner: Depress the handle ofthe lever 13, the strap a is unwound from the disk-spool and causes thedisk to revolve in a forward direction, the locks d (1 extending beyondthe edges of tlie disk, their friction-surfaces en gage the wheel E andcause it and the balancewheelto revolve also, by which, through the band9, the blower F or other machinery is set in motion. As the strap a isunwound the strap a is wound upon its spool, and when the lever-arm israised the strap a, unwinding, causes the disk I) to revolve in theopposite direction. The clutches d d immediately fall away from contactwith the wheel and hang loosely until a forward movement isagainimparted to the disk by depressing again the lever-arm B. Theimpetus given the balancewheel causes it to continue its motion throughtheintervals between consecutive depressions ofthe lever, and thus auniform and powerful force is obtained. H

in the drawings two clutching-blocks are shown, but one only or three ormore may be employed, and their size and the extent of theirbearing-surfaces be varied, according to the power required, or othercircumstances controlling its application.

, Having thus described my invention, what I claim, and desire to'secure by Letters Patent of the United States, is-

1. In a device for converting vertical to rotary motion, thecombination, with a lever, B, having straps a a, ot'a disk,l),'workingloosely on a shaft, (3, provided with suitable recesses for the strapsto (1/,flnd with check-pins e e or their equivalents, and having movablefriction-locks d d, furnished with leather or rawhide bearing-surfaces dd, a box-wheel, E, and balance-wheel G, fixed to the shaft 0, and asupporting-frame, A, provided with bearings, as required, substantiallyas herein set forth.

2. The herein-described mechanism for driving a smiths blower or othermachinery, consisting of the combination, with a supportingframe,A,furnished with requisite bearings, of a lever, B, bolt 0, straps a a,shaft 0, balance-Wheel Gr,l)ox-wheel E, disk D, having the spool-bearingextension H, and clutchblOOltS d d, each havingbearing-surfaces (1 d,the central projection, f, pins 0 e, the band g, and the blower F, allconstructed and operated substantially as herein set forth.

In testimony whereof I afflx my signature, in presence of two witnesses,this 16th vday of February, 1883.

JOHN W. HIEMENZ.

Witnesses:

M. M. ROHRER, U. W ESSOLOWSKY.

